Add liblastfm2 and make tomahawk build against it

thirdparty/liblastfm2/admin/which_qmake.rb

@@ -0,0 +1,38 @@
+require "#{File.dirname __FILE__}/platform.rb"
+
+class QMakeNotFound < RuntimeError; end
+class QMakeTooOld < RuntimeError; end
+
+def which_qmake
+  args = '-v'
+  args += ' 2> /dev/null' unless Platform::IMPL == :mswin
+
+  versions = Hash.new
+  ['qmake','qmake-qt4'].each do |qmake|
+    begin
+      /^Using Qt version (\d\.\d\.\d)(-(.+))?/.match( `#{qmake} #{args}` )
+    rescue
+    end
+    versions[qmake] = $1 unless $1.nil?
+  end
+
+  raise QMakeNotFound if versions.empty? 
+
+  versions.each do |key, v|
+    i = 1
+    j = 0
+    v.split( '.' ).reverse.each {|n| j += (n.to_i * i); i *= 100}
+    versions[key] = j
+  end
+
+  versions.sort {|a,b| a[1]<=>b[1]}
+
+  versions.each do |k, v| 
+    if v >= 40400
+      return k
+    end
+    raise QMakeTooOld
+  end
+end
+
+puts which_qmake if __FILE__ == $0